The combination of an electron-withdrawing (EWG) and an electrondonating substituent (EDG) on the carbenoid appears to be the crucial requirement for high diastereoselectivity and enantioselectivity when the rhodium(II) prolinate system is used.
a marauding band
I can't go with you to the museum this Saturday, but can I take a rain check and go some other day?
2006: Weekend Argus 14 May 2006 p.8. - An 18 year old boy was electrocuted yesterday while train surfing in Soweto yesterday, emergency services said. The boy had been standing on the roof of the train... According to emergency services, the boys wait until the train is travelling slowly and climb onto the roof and ride it like a surf board. [published in South Africa]
train surfing
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